iStock/Thinkstock(NEW YORK) -- The first cold front of the week moved through the Northeast Tuesday night, bringing the first snow of the season to Pennsylvania, the Hudson Valley of New York and on into Massachusetts and Connecticut.

Temperatures in the Northeast on Wednesday will barely reach above 50 degrees in many areas. Highs for New York City and Philadelphia are forecast to be 52 degrees, with Boston reaching just 45 degrees.

But expect even colder weather over the weekend.

A second arctic cold front is forecast to bring record-cold morning temperatures to the Northeast Saturday morning.

Along with plummeting temperatures, snow is expected from the Midwest to the Northeast, especially near the Great Lakes.

The arctic front will move into the Midwest from Wednesday night into Thursday morning, bringing the coldest air since last winter.

The temperatures Friday morning in some areas of Minnesota could be below zero, with temperatures in the teens as far south as Chicago.

The arctic blast will reach the Northeast Friday afternoon and evening.

Winter Storm Warnings have been issued for Wisconsin and Michigan. As much as a foot of lake effect snow is possible.

New western storm

A new storm system moves into the West on Wednesday, bringing heavy rain to northern California and parts of southern Oregon. Gusty winds of up to 60 mph are possible.

San Francisco will see rain Wednesday evening that continues into the night. Flash flooding and debris flow is possible in areas recently affected by wildfires.

Some parts of northern California could see up to 6 inches of rain, with up to 30 inches of snow possible in the Sierra Nevada Mountains and the Cascades.